Pneumatic valve mechanism.



R. T. SC-HRIBER, G. GEORGE & W. H. MEACHAIVI.

PNEUMATIC VALVE MECHANISM. f APPLICATION FILED 050.13, 1915.

Patented July 17; 1917.

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o as f 55- a o o M i INVENTORS Game Gem 'ga E. If fichm/b @2 M2 ATTOR N EY rtrcrraan rfsorriiinnn, euss GEORGE, AND anila ii ivr'nacrmiw, QB 111113011 PARK,

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Toallwlwm'e't may concern "Be it known that we,R1c1;IA1;DT. SGHRIB R, GUSS GEORGE, "and lVILLIAM H. MEAGHAM, citizens of the'United States, residing at AltonPark, in the countyofHamilton and State [of Tennessee, have invented new and useful Improvements in j'Pn eun iatic Valve Mechanism, of which. i the following is a specification. V

'This invention relates toa valve mechanism especially designed for'use in connection' with glass blowing apparatus for 'sup-' plying air under pressure to the glass blowing' deVi ceS, but'which may be employed for other purposesdthe object of the invention being toprovide a valve mechanism whereby air under pressure mayfbe alternately supplied to two working parts or elements, and alternately exhausted therefrom.

A further object of the invention is to provide a valve mechanism which when supplying air to one working element will ex haust the air from the other working element, and which is simple, reliable and ellicient in action, and capable of being constructed and installed at a comparatively low cost.

The invention consists of the features of construction, combination and arrangement of parts hereinafter fully described and claimed, reference being had to the accompanying drawings in which Figure 1 is a vertical section through the valve mechanism, showing the valve in one of its working positions.

Fig. 2 is a similar view showing the valve in its other working position.

In carrying the invention into practice, we provide a valve mechanism comprising an admission chamber or cylinder 67, a distributing chamber or cylinder 68 and an intermediate exhaust chamber 69. The chamber 67 is provided at its lower end with an inlet port 7 0 connected with a primary feed pipe 67 and has arranged therein a controlling valve 72 governing a feed passage leading to a supply port 73, which valve is adapted to be opened and closed by means of a screw stem 74. The port 73 is connected by a duct 75 with upper and lower feed ports 76 and 77 communicating with the interior of the chamber 68 immediately above and below the horizontal transverse center thereof, which chamber 68 is provided with upper and lower discharge ports 78 a s pecification of Letters Patent.

'A piianon filed December 13,1915; f'seria11voles, 399f' '1 Patented July; 117, 19 17.

and 7 9 connected by pipes or conductors 80 and 81 leading'to the elements, not shown, which'are to be supplied with air. T

The chamber '68 has arranged therein a governing valve 820 f the sliding piston type which is provided withfa downwardly and exteriorly projecting stem 83, andthis valve 82 controls the ports 7 6 and 77 and also controls upper and lower exhaust ports 84k and 85 extending laterally between the chamber 68 and the exhaust chamber 69, which is provided with a final exhaust port 86. Arranged within' the chamber 69 is an exhaust valve 87 of the piston type and having a cutoff sleeve 88 depending from its head portionand exhaustports 89 in its head portion, said valve being provided with a downwardly,jand'exteriorly projecting stem- 90,

the respective valve stems 83 and" 90'being slidabl-yja-nd pivotally connected with the opposite arms of a centrally fulcrumed valve actuating lever 91, whereby said valves are adap'tedto be simultaneously and alternately moved in opposite directions. The stem 83 is also connected with a. valve controlling lever 92 movable upwardly and downwardly whereby the valves 82 and 87 will be adjusted to upper and lower feed positions and lower and upper exhaust positions, respectively. Thus when the lever 92 is elevated to the position shown in Fig. 1, the valve 82 will be in position to close the port 76 and open the port 7 7 for the flow of air through the pipe 81, and for the exhaust of air to the atmosphere through the ports 84: and 86, while when the lever 92 is depressed, as shown in Fig. 2, it will move valve 82' in a direction to close the port 77 and open the port 76, while the valve 87 will be moved to close the port 8% and establish communication between the port 85 and the ports 86 and 89 for the exhaust of air from the pipe 81.

It will thus be seen that the invention provides a valve mechanism whereby compressed air from a suitable source may be supplied alternately to two working elements, and" exhausted from each working element in turn while'the other is being supplied with air, whereby said elements may be alternately operated. While the invention is primarily designed for use in con nection with the working devices of a glass blowing apparatus, it will also be seen that it is adapted for use in connection with any type of apparatus for supplying and exhausting air to and from working) parts in the manner described. It is to e understood, of course, that the valve actuating device or lever 92 may be operated in anysuitable manner.

A valve mechanism for controlling the supply of air to pneumatically operated elements comprising an actuating device, ad-

mission, ;distributing and exhaust chambers, .said admission chamber having inlet and feed p orts',said' distributing chamber hav- 7 ing-sets ofinlet, feed and exhaust ports,

and said exhaust chamber-having an exhaust port and communicating with the exhaust-ports ofthedistributingchamber, pis- .ton valves operating in the distr buting and exhaust chambers, and controlllng the respective ports, a connection between said'piston valves for operating the samein reverse directionsin unison, and a controlling connection between one ofsaid pistons and the actuating device.

2. A valve mechanism for controlling the supply of airto pneumatically operated elewments comprising a valve controlledadmission chamber, a distributingchamber hav- Go ies of this patent may be obtained for ing upper and-lower air inlet and discharge ports, an exhaust chamber having an outlet ort and exhaust ports connecting said chamber having an outlet port and exhaust ports connecting said chamber with the upper and lower portions of the distributing chamber, a piston valve controlling the inlet ports in the distributing chamber, an exhaust valve controlling the ports in the exhaust chamber, alever pivotally connecting said valves for movement in opposite directlons, and means for communicatmg motion to said lever from said actuating device.

In testimony whereof we aifix our signatures in presence of two witnesses.

RICHARD T. SCHRIBER. GUSS GEORGE. I W. H. MEAOI-IAM.

Witnesses: 1 V v CLAmoE E. GEORGE, E. N. REED.

five cents each, by addressing the "Commissioner of Patents, 'Washington, 10.0. r 

